Patents by Inventor Adam Adrian Brostow

Adam Adrian Brostow has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20200378682
    Abstract: A system and a process for processing a natural gas liquid feed is provided. In the system, a dense fluid expander is positioned downstream from a subcooler heat exchanger. The subcooler heat exchanger cools one or more reflux streams against an overhead vapor stream and a distillation column positioned downstream from the dense fluid expander. An increase in recovery of natural gas liquids is provided through the use of this system having at least one dense fluid expander.
    Type: Application
    Filed: May 29, 2019
    Publication date: December 3, 2020
    Inventor: Adam Adrian Brostow
  • Patent number: 10852059
    Abstract: Systems and methods described for increasing capacity and efficiency of natural gas liquefaction processes having a mixed refrigerant precooling system with multiple pressure levels comprising cooling the compressed mixed refrigerant stream and separating the cooled compressed mixed refrigerant stream into a vapor and liquid portion. The liquid portion provides refrigeration duty to a first precooling heat exchanger. The vapor portion is further compressed, cooled, and condensed, and used to provide refrigeration duty to a second precooling heat exchanger. A flash gas separated from the liquefied natural gas is warmed and combined with the natural gas feed stream.
    Type: Grant
    Filed: September 28, 2017
    Date of Patent: December 1, 2020
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Gowri Krishnamurthy, Mark Julian Roberts, Adam Adrian Brostow
  • Patent number: 10753676
    Abstract: Systems and methods described for increasing capacity and efficiency of natural gas liquefaction processes having a mixed refrigerant precooling system with multiple pressure levels comprising cooling the compressed mixed refrigerant stream and separating the cooled compressed mixed refrigerant stream into a vapor and liquid portion. The liquid portion provides refrigeration duty to a first precooling heat exchanger. The vapor portion is further compressed, cooled, and condensed, and used to provide refrigeration duty to a second precooling heat exchanger. A flash gas separated from the liquefied natural gas is warmed and combined with the natural gas feed stream.
    Type: Grant
    Filed: September 28, 2017
    Date of Patent: August 25, 2020
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Gowri Krishnamurthy, Mark Julian Roberts, Adam Adrian Brostow
  • Publication number: 20200200471
    Abstract: A liquefaction system is capable of sequentially or simultaneously liquefying multiple feed streams of hydrocarbons having different normal bubble points with minimal flash. The liquefying heat exchanger has separate circuits for handling multiple feed streams. The feed stream with the lowest normal boiling point is sub-cooled sufficiently to suppress most of the flash. Feed streams with relatively high normal boiling points are cooled to substantially the same temperature, then blended with bypass streams to maintain each product near its normal bubble point. The system can also liquefy one stream at a time by using a dedicated circuit or by allocating the same feed to multiple circuits.
    Type: Application
    Filed: March 2, 2020
    Publication date: June 25, 2020
    Applicant: Air Products and Chemicals, Inc.
    Inventors: Laurent Marc Brussol, David Joseph Holzer, Sylvain Vovard, Russell Shnitser, Adam Adrian Brostow, Mark Julian Roberts
  • Patent number: 10619917
    Abstract: A liquefaction system is capable of sequentially or simultaneously liquefying multiple feed streams of hydrocarbons having different normal bubble points with minimal flash. The liquefying heat exchanger has separate circuits for handling multiple feed streams. The feed stream with the lowest normal boiling point is sub-cooled sufficiently to suppress most of the flash. Feed streams with relatively high normal boiling points are cooled to substantially the same temperature, then blended with bypass streams to maintain each product near its normal bubble point. The system can also liquefy one stream at a time by using a dedicated circuit or by allocating the same feed to multiple circuits.
    Type: Grant
    Filed: September 13, 2017
    Date of Patent: April 14, 2020
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Laurent Marc Brussol, David Joseph Holzer, Sylvain Vovard, Russell Shnitser, Adam Adrian Brostow, Mark Julian Roberts
  • Patent number: 10359228
    Abstract: A system and method for liquefaction of a natural gas stream utilizing a plurality of asymmetric parallel pre-cooling circuits. The use of asymmetric parallel cooling circuits allows for greater control over each refrigerant stream during the cooling process and simplifies process control by dedicating heat exchangers to performing similar duties.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: July 23, 2019
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Adam Adrian Brostow, Fei Chen, Mark Julian Roberts, Christopher Michael Ott
  • Patent number: 10323880
    Abstract: The present invention relates to methods of increasing the operability, capacity, and efficiency of natural gas liquefaction processes, with a focus on mixed refrigerant cycles. The present invention also relates to natural gas liquefaction systems in which the above-mentioned methods can be carried out. More specifically, a refrigerant used in a pre-cooling heat exchanger of a natural gas liquefaction plant is withdrawn from the pre-cooling heat exchanger, separated into liquid and vapor streams in a liquid-vapor separator after being cooled and compressed. The vapor portion is further compressed, cooled, and fully condensed, then returned to the liquid-vapor separator. Optionally, the fully condensed stream may be circulated through a heat exchanger before being returned to the liquid-vapor separator for the purpose of cooling other streams, including the liquid stream from the liquid-vapor separator.
    Type: Grant
    Filed: September 27, 2016
    Date of Patent: June 18, 2019
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Mark Julian Roberts, Gowri Krishnamurthy, Adam Adrian Brostow
  • Publication number: 20190093947
    Abstract: Systems and methods described for increasing capacity and efficiency of natural gas liquefaction processes having a mixed refrigerant precooling system with multiple pressure levels comprising cooling the compressed mixed refrigerant stream and separating the cooled compressed mixed refrigerant stream into a vapor and liquid portion. The liquid portion provides refrigeration duty to a first precooling heat exchanger. The vapor portion is further compressed, cooled, and condensed, and used to provide refrigeration duty to a second precooling heat exchanger. A flash gas separated from the liquefied natural gas is warmed and combined with the natural gas feed stream.
    Type: Application
    Filed: September 28, 2017
    Publication date: March 28, 2019
    Applicant: Air Products and Chemicals, Inc.
    Inventors: Gowri Krishnamurthy, Mark Julian Roberts, Adam Adrian Brostow
  • Publication number: 20190093946
    Abstract: Systems and methods described for increasing capacity and efficiency of natural gas liquefaction processes having a mixed refrigerant precooling system with multiple pressure levels comprising cooling the compressed mixed refrigerant stream and separating the cooled compressed mixed refrigerant stream into a vapor and liquid portion. The liquid portion provides refrigeration duty to a first precooling heat exchanger. The vapor portion is further compressed, cooled, and condensed, and used to provide refrigeration duty to a second precooling heat exchanger. A flash gas separated from the liquefied natural gas is warmed and combined with the natural gas feed stream.
    Type: Application
    Filed: September 28, 2017
    Publication date: March 28, 2019
    Applicant: Air Products and Chemicals, Inc.
    Inventors: Gowri Krishnamurthy, Mark Julian Roberts, Adam Adrian Brostow
  • Publication number: 20190078840
    Abstract: A liquefaction system is capable of sequentially or simultaneously liquefying multiple feed streams of hydrocarbons having different normal bubble points with minimal flash. The liquefying heat exchanger has separate circuits for handling multiple feed streams. The feed stream with the lowest normal boiling point is sub-cooled sufficiently to suppress most of the flash. Feed streams with relatively high normal boiling points are cooled to substantially the same temperature, then blended with bypass streams to maintain each product near its normal bubble point. The system can also liquefy one stream at a time by using a dedicated circuit or by allocating the same feed to multiple circuits.
    Type: Application
    Filed: September 13, 2017
    Publication date: March 14, 2019
    Applicant: Air Products and Chemicals, Inc.
    Inventors: Laurent Marc Brussol, David Joseph Holzer, Sylvain Vovard, Russell Shnitser, Adam Adrian Brostow, Mark Julian Roberts
  • Patent number: 10132561
    Abstract: A system and method for removal of a contaminant comprising removing a liquefied portion of a refrigerant stream comprising nitrogen from a reverse Brayton cycle refrigerant system, introducing the liquefied refrigerant stream into a contaminant removal column as a reflux stream removing a contaminant stream from the bottom of the contaminant removal column, removing a vapor stream enriched in nitrogen from the top of the contaminant removal column, and introducing the vapor stream enriched in nitrogen back into the reverse Brayton cycle refrigerant system.
    Type: Grant
    Filed: August 13, 2009
    Date of Patent: November 20, 2018
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Mark Julian Roberts, Adam Adrian Brostow
  • Publication number: 20180087832
    Abstract: The present invention relates to methods of increasing the operability, capacity, and efficiency of natural gas liquefaction processes, with a focus on mixed refrigerant cycles. The present invention also relates to natural gas liquefaction systems in which the above-mentioned methods can be carried out. More specifically, a refrigerant used in a pre-cooling heat exchanger of a natural gas liquefaction plant is withdrawn from the pre-cooling heat exchanger, separated into liquid and vapor streams in a liquid-vapor separator after being cooled and compressed. The vapor portion is further compressed, cooled, and fully condensed, then returned to the liquid-vapor separator. Optionally, the fully condensed stream may be circulated through a heat exchanger before being returned to the liquid-vapor separator for the purpose of cooling other streams, including the liquid stream from the liquid-vapor separator.
    Type: Application
    Filed: September 27, 2016
    Publication date: March 29, 2018
    Applicant: Air Products and Chemicals, Inc.
    Inventors: Mark Julian Roberts, Gowri Krishnamurthy, Adam Adrian Brostow
  • Patent number: 9920987
    Abstract: A system and method of gas liquefaction having a compression sequence for a mixed refrigerant in which a mixing column is used to provide liquid and vapor product streams at least one step of the compression sequence in which a phase separation is desirable. In addition, the compression sequence may optionally or alternatively use a stripper column in at least one step in the compression sequence in which a phase separation is desirable.
    Type: Grant
    Filed: May 8, 2015
    Date of Patent: March 20, 2018
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Adam Adrian Brostow, Gowri Krishnamurthy
  • Publication number: 20170336136
    Abstract: A system and method for liquefaction of a natural gas stream utilizing a plurality of asymmetric parallel pre-cooling circuits. The use of asymmetric parallel cooling circuits allows for greater control over each refrigerant stream during the cooling process and simplifies process control by dedicating heat exchangers to performing similar duties.
    Type: Application
    Filed: May 20, 2016
    Publication date: November 23, 2017
    Applicant: Air Products and Chemicals, Inc.
    Inventors: Adam Adrian Brostow, Fei Chen, Mark Julian Roberts, Christopher Michael Ott
  • Publication number: 20160327335
    Abstract: A system and method of gas liquefaction having a compression sequence for a mixed refrigerant in which a mixing column is used to provide liquid and vapor product streams at least one step of the compression sequence in which a phase separation is desirable. In addition, the compression sequence may optionally or alternatively use a stripper column in at least one step in the compression sequence in which a phase separation is desirable.
    Type: Application
    Filed: May 8, 2015
    Publication date: November 10, 2016
    Applicant: AIR PRODUCTS AND CHEMICALS, INC.
    Inventors: Adam Adrian Brostow, Gowri Krishnamurthy
  • Patent number: 8656733
    Abstract: Liquefaction using a closed loop refrigeration system, including compressing a gaseous refrigerant stream; cooling at least a portion of the compressed gaseous refrigerant stream in a first heat exchanger; expanding a first portion of the cooled, compressed gaseous refrigerant stream from the first heat exchanger to provide a first expanded gaseous refrigerant stream; cooling and substantially liquefying a feed gas stream to form a substantially liquefied feed gas stream in a second heat exchanger through indirect heat exchange against the first portion of the first expanded gaseous refrigerant stream; and further cooling a second portion of the cooled, compressed gaseous refrigerant stream from the first heat exchanger in a third heat exchanger by indirect heat exchange with a second portion of the first expanded gaseous refrigerant stream, wherein the first expanded gaseous refrigerant stream exiting the first expander is substantially vapor.
    Type: Grant
    Filed: February 27, 2013
    Date of Patent: February 25, 2014
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Mark Julian Roberts, Adam Adrian Brostow
  • Publication number: 20130269386
    Abstract: A method and apparatus for drying and liquefying a natural gas stream is described, in which: (a) the water containing natural gas feed stream is cooled; (b) the cooled natural gas feed stream is dried and further cooled; (c) the dried cooled natural gas stream is heated; (d) the dried rewarmed natural gas stream is cooled and liquefied and at least one compressed refrigerant feed stream is cooled by counter-current indirect heat exchange with an expanded cold refrigerant; and (e) the compressed cold refrigerant stream or streams are expanded, and thereby further cooled, to provide said expanded cold refrigerant; wherein the cooling of the natural gas feed stream in step (a) and heating of the dried cooled natural gas stream in step (c) is by indirect heat exchange between said two streams.
    Type: Application
    Filed: April 11, 2012
    Publication date: October 17, 2013
    Applicant: AIR PRODUCTS AND CHEMICALS, INC.
    Inventors: Adam Adrian Brostow, Glenn Eugene Kinard
  • Patent number: 8464551
    Abstract: A method for liquefaction using a closed loop refrigeration system, the method comprising the steps of (a) compressing a gaseous refrigerant stream in at least one compressor; (b) cooling the compressed gaseous refrigerant stream in a first heat exchanger; (c) expanding at least a first portion of the cooled, compressed gaseous refrigerant stream from the first heat exchanger in a first expander to provide a first expanded gaseous refrigerant stream; and (d) cooling and substantially liquefying a feed gas stream to form a substantially liquefied feed gas stream in a second heat exchanger through indirect heat exchange against at least a first portion of the first expanded gaseous refrigerant stream from the first expander, wherein the first expanded gaseous refrigerant stream exiting the first expander is substantially vapor.
    Type: Grant
    Filed: November 18, 2008
    Date of Patent: June 18, 2013
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Mark Julian Roberts, Adam Adrian Brostow
  • Publication number: 20110036121
    Abstract: A system and method for removal of a contaminant comprising removing a liquefied portion of a refrigerant stream comprising nitrogen from a reverse Brayton cycle refrigerant system, introducing the liquefied refrigerant stream into a contaminant removal column as a reflux stream removing a contaminant stream from the bottom of the contaminant removal column, removing a vapor stream enriched in nitrogen from the top of the contaminant removal column, and introducing the vapor stream enriched in nitrogen back into the reverse Brayton cycle refrigerant system.
    Type: Application
    Filed: August 13, 2009
    Publication date: February 17, 2011
    Applicant: AIR PRODUCTS AND CHEMICALS, INC.
    Inventors: Mark Julian Roberts, Adam Adrian Brostow
  • Publication number: 20100122551
    Abstract: A method for liquefaction using a closed loop refrigeration system, the method comprising the steps of (a) compressing a gaseous refrigerant stream in at least one compressor; (b) cooling the compressed gaseous refrigerant stream in a first heat exchanger; (c) expanding at least a first portion of the cooled, compressed gaseous refrigerant stream from the first heat exchanger in a first expander to provide a first expanded gaseous refrigerant stream; and (d) cooling and substantially liquefying a feed gas stream to form a substantially liquefied feed gas stream in a second heat exchanger through indirect heat exchange against at least a first portion of the first expanded gaseous refrigerant stream from the first expander, wherein the first expanded gaseous refrigerant stream exiting the first expander is substantially vapor.
    Type: Application
    Filed: November 18, 2008
    Publication date: May 20, 2010
    Applicant: Air Products and Chemicals, Inc.
    Inventors: Mark Julian Roberts, Adam Adrian Brostow